The BMU Bandits

All things NVA
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Fretless
Posts: 5369
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Netherlands

Re: The BMU Bandits

Unread post by Fretless » Fri Jun 21, 2019 10:19 am

The NVA Aesthetics Police will be relieved to hear that the offending white plugs have been replaced by cool-looking black ones. 8-)

Sorry, Firebug, not MCRU or RA. :dance:
Main: NVA: P50sa-SSP-A40-LS6-Cube2-BMU
Pi: Allo DigiOne Sig/Tomanek LPSU/AQ Jitterbug
DAC: TeraDak V4.5 Chameleon CD: Cambridge CXC
Cans: AQ NightHawk + Schiit Magni3 + Metrum Musette
System2: Allo DigiOne/Weiliang LPSU + TeraDak V2.7
Sansui AU217 + NVA Cube3 + MIT MI-330 Terminator
Lounge: Sonos Connect + NVA P80/A40S + Arcam One
Vinyl: ProJect Debut2 + A&R P77Mg CD: Arcam CD62T
Office: Topping D30 + Kenwood KA660D + Mission 760

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Keithh
Posts: 62
Joined: Tue Aug 28, 2012 5:03 pm
Location: London

Re: The BMU Bandits

Unread post by Keithh » Fri Jun 21, 2019 2:54 pm

I had one of the first run and it stayed and won't be moving. The immediate effect was like having an extension to the living room as the rear wall seemed to have been moved back 6 feet - incredible. Only downside was the hum which I had from the A80s seemed to move to the BMU but that has reduced over time and I have to listen for it now.
Of all noises, I think music is the least disagreeable. - Samuel Johnson
In == Vortexbox + Raspberry Pi + BOSS DAC/ Goldring 1042 + SL-1210MK2 + Phono 1
Shaking it all about == P50SA + SP + A80s
Out == LS6 biwire + Cube 1
Bubbling under == BMU

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terrybooth
Posts: 3978
Joined: Wed Jul 11, 2012 6:49 pm
Location: West Yorkshire
Great Britain

Re: The BMU Bandits

Unread post by terrybooth » Fri Jun 21, 2019 3:48 pm

Keithh wrote:
Fri Jun 21, 2019 2:54 pm
hum which I had from the A80s seemed to move to the BMU
Yeah, but just think of it as an old marshall/fender/vox guitar amp turned up to 11. :grin:
Pioneer PL71/DL103/ Phono2/HiFiPi/P90SA/TIS/CubixPro

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CN211276
Posts: 3088
Joined: Tue Aug 09, 2016 9:29 am
Location: Cardiff
Wales

Re: The BMU Bandits

Unread post by CN211276 » Fri Jun 21, 2019 5:26 pm

I got rid of the hum with a DC blocker the Doc provided a link to. Around £80.
I set a course just east of Lyra
And northwest of Pegasus
Flew into the light of Deneb
Sailed across the Milky Way

Sonore microRendu/MCRU PS, AQ J-bug, Wirewold Ultraviolet, Chord Mscaler-Qutest/MCRU PS, Geitnote Apogee, NVA BMU, P90SA, A80sMk2, Phono 1, SSP Mk 2, TSCS, TIS mk2, Cube 1s, Atacama stands, Rega Planar 3, Denon DL-110, Grado SR 325e, headphones.

Second system
Chord Mojo (also HP amp), NVA P20, A20, Cubettes, SSC, LS3.

Out and about
Oppo PM3, Audioquest Dragonfly Red.

R.I.P. Doc

scotty38
Posts: 260
Joined: Sat Jan 20, 2018 12:51 am
Great Britain

Re: The BMU Bandits

Unread post by scotty38 » Sat Jun 22, 2019 12:15 am

Atlhifi is the place I think, well that's where I got mine from...

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Fretless
Posts: 5369
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Netherlands

Re: The BMU Bandits

Unread post by Fretless » Mon Jun 24, 2019 2:00 pm

I've just worked out that with an extension cable I can also hook the bedroom system (Pi/DAC, Sansui amp & Cube3) up to the BMU.

Could be fun. Have to rig up the cable now.
Main: NVA: P50sa-SSP-A40-LS6-Cube2-BMU
Pi: Allo DigiOne Sig/Tomanek LPSU/AQ Jitterbug
DAC: TeraDak V4.5 Chameleon CD: Cambridge CXC
Cans: AQ NightHawk + Schiit Magni3 + Metrum Musette
System2: Allo DigiOne/Weiliang LPSU + TeraDak V2.7
Sansui AU217 + NVA Cube3 + MIT MI-330 Terminator
Lounge: Sonos Connect + NVA P80/A40S + Arcam One
Vinyl: ProJect Debut2 + A&R P77Mg CD: Arcam CD62T
Office: Topping D30 + Kenwood KA660D + Mission 760

User avatar
Fretless
Posts: 5369
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Netherlands

Re: The BMU Bandits

Unread post by Fretless » Thu Jun 27, 2019 7:57 am

Don't often get the chance to listen to my main system during the day, but one afternoon this week (trying to escape from 33-degree heatwave) I did. The BMU was humming quite loudly - which is the first time I have heard it doing that.

Then the sun went behind a cloud and the humming stopped.
Sun came back - humming started again.

I have quite a large solar-panel array on the barn roof at the back of the house and this is obviously kicking some noise into the mains here, this is also audible via the old NVA A40 that I have in the lounge - that buzzes slightly through the speakers to let me know when the panels are starting-up.
Main: NVA: P50sa-SSP-A40-LS6-Cube2-BMU
Pi: Allo DigiOne Sig/Tomanek LPSU/AQ Jitterbug
DAC: TeraDak V4.5 Chameleon CD: Cambridge CXC
Cans: AQ NightHawk + Schiit Magni3 + Metrum Musette
System2: Allo DigiOne/Weiliang LPSU + TeraDak V2.7
Sansui AU217 + NVA Cube3 + MIT MI-330 Terminator
Lounge: Sonos Connect + NVA P80/A40S + Arcam One
Vinyl: ProJect Debut2 + A&R P77Mg CD: Arcam CD62T
Office: Topping D30 + Kenwood KA660D + Mission 760

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CN211276
Posts: 3088
Joined: Tue Aug 09, 2016 9:29 am
Location: Cardiff
Wales

Re: The BMU Bandits

Unread post by CN211276 » Thu Jun 27, 2019 8:54 am

I do not have solar panels but for some reason my BMU would usually hum first thing in the morning. This stopped when I connected it to a DC blocker.
I set a course just east of Lyra
And northwest of Pegasus
Flew into the light of Deneb
Sailed across the Milky Way

Sonore microRendu/MCRU PS, AQ J-bug, Wirewold Ultraviolet, Chord Mscaler-Qutest/MCRU PS, Geitnote Apogee, NVA BMU, P90SA, A80sMk2, Phono 1, SSP Mk 2, TSCS, TIS mk2, Cube 1s, Atacama stands, Rega Planar 3, Denon DL-110, Grado SR 325e, headphones.

Second system
Chord Mojo (also HP amp), NVA P20, A20, Cubettes, SSC, LS3.

Out and about
Oppo PM3, Audioquest Dragonfly Red.

R.I.P. Doc

User avatar
Ali Tait
Posts: 292
Joined: Thu Jul 12, 2012 9:13 am

Re: The BMU Bandits

Unread post by Ali Tait » Thu Jun 27, 2019 9:31 am

Fretless wrote:
Thu Jun 27, 2019 7:57 am
Don't often get the chance to listen to my main system during the day, but one afternoon this week (trying to escape from 33-degree heatwave) I did. The BMU was humming quite loudly - which is the first time I have heard it doing that.

Then the sun went behind a cloud and the humming stopped.
Sun came back - humming started again.

I have quite a large solar-panel array on the barn roof at the back of the house and this is obviously kicking some noise into the mains here, this is also audible via the old NVA A40 that I have in the lounge - that buzzes slightly through the speakers to let me know when the panels are starting-up.
Have you checked your mains reading? Having solar panels can add 10v or more to your mains when they are producing. If your mains is high to begin with, transformers could become unhappy with this.

User avatar
Fretless
Posts: 5369
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Netherlands

Re: The BMU Bandits

Unread post by Fretless » Thu Jun 27, 2019 9:50 am

Thanks for that tip Ali. Standard AC voltage in The Netherlands should be about 230V - I think I have a multimeter somewhere and I'll try to check it.
Main: NVA: P50sa-SSP-A40-LS6-Cube2-BMU
Pi: Allo DigiOne Sig/Tomanek LPSU/AQ Jitterbug
DAC: TeraDak V4.5 Chameleon CD: Cambridge CXC
Cans: AQ NightHawk + Schiit Magni3 + Metrum Musette
System2: Allo DigiOne/Weiliang LPSU + TeraDak V2.7
Sansui AU217 + NVA Cube3 + MIT MI-330 Terminator
Lounge: Sonos Connect + NVA P80/A40S + Arcam One
Vinyl: ProJect Debut2 + A&R P77Mg CD: Arcam CD62T
Office: Topping D30 + Kenwood KA660D + Mission 760

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